how can i do this mapping between 2 txt files

Question

I have text file contains data like as:

ID 1 Name Mary Mark 89

ID 2 Name Mai   Mark 67

and I have another  txt file contains data :

ID Mobile

1   0993209320

2   0943043094

I want to create excel file which contains only two columns:

Mobile                      Message

0993209320            ID 1 Name Mary Mark 89
0943043094            ID 2 Name Mai   Mark 67

how can i do this mapping between 2 txt files based on ID in c#?